Apparatus for beating and refining pulp.



No. 650,l85. .iPatentqd Ma 22; 191m.v V

J. B.-F. X'.- MATHIEU. APPARATUS FOR B'EATING AND 'REFINING PULP.

(Appli'cation'flled Apr. '7, 1899.) (No Model.) 2 SheetsSheet 2,

WITNESSES: INVEAFOH dank/rm TN: nomns PEYERS ca, Pnofaurnm WASNINGTON, n. c,

ing-cone.

PATENT OFFICE, I

A JEAN BAPTISTE FRANQOIS XAVIER'MATHIEU, OF ANNONAY, FRANCE.

APPARATUS FOR BEATING AND REFINING PULP.

SPECIFICATION forming part of Letters Patent No. 650,185, dated May 22, 1900.

Application filed April '7, 1899.

To all whom it may concern.-

Be it known that I, JEA'N BAPTISTE FRAN- goIs XAVIER MATHIEU, engineer, of Pontde-la-Pierre, les Annonay, par Boulieu, Ardche, in the Republic of France, have invented new and useful Improvements in or Relating to Apparatus for Use in Beating or Refining Pulp for the Manufacture of Paper, which is fully set forth in the following specification.

This invention relates to an apparatus for use in beating or refining pulp for the manufacture of paper.

The invention consists of certain features of construction and combinations of parts to be hereinafter described and then claimed.

In the accompanying drawings, Figure 1 is a vertical longitudinal section of the apparatus, taken through the diameter of the grind- Fig. 2 is a plan view of the same, parts being in section. V

Similar letters and numerals of reference indicate corresponding parts.

The apparatus comprises a metallic shell a of frusto-conical shape, its Widest end being at the upper end and its narrowest at the lower end, and a metallic hood 2, which is bolted, as shown, to the widest portion of the shell or and is open at one side at 3 to provide an outlet extending laterally from the shell and which is located at the upper end of the gradually and downwardly inclined circulating channel or trough 6, which terminates in a gradually-contracting and downwardly-inclined inlet-throat 5, which opens into the lower end of the conical shell a. All these parts form the circulating-channels of the vat A.

Inside the shell a is arranged a truncated grinding-cone c, which is mounted on a vertical shaft 1), coincident with the axis of the shell a, said shaft being journaled in a bearing 4 of the hood 2 and in a bottom bearing at 1*, provided with a stuffing-box Arranged longitudinally on the peripheral surface of the grinding-cone e are a series of suitably-spaced blades f, of steel or gun-metal, which are secured'in the cone e, from which they project to a distance of several centimeters. On the inner surface of the truncated shell or is also arranged a series of blades h. It will be observed that while the cone c is Serial No. 712,057. (No modelll concentric with the shell a the width of the annular space between the same is greater at the smaller end of the cone adjacent the inletthroat 5, while it is less at the larger end of the cone adjacent the outlet 3. This arrangement and relative size permits the free entrance into the annular space of the fibers or pieces of pulp and the gradual crowding of them into and grinding them in the more contracted portions of the space, thus more thoroughly comminuting them than if the space were the same width throughout. The blades h of the shell Ct taper from near the inlet endto the outlet end, while the blades f on the cone e taper in the opposite direction, so that the adjacent edges of the blades f and h are not parallel with the inner surface of the shell Cb or the surface of the cone 6, such arrangement resulting in superior grinding or cutting effects'.

The cone 2, as has been said before, is arranged vertically, with its largest diameter at its upper end. The lower portion is set in somewhat a little above the bottom of the outer shell and then ends'with a decided or more tapering cone p. The top of the cone ends in a cone g, which extends up to the hood 2. The shaft b, before'referred to, is supported and turns on a steel pivot in a bearing 011 an arched stand 25, which rests on a baseplate or foundation and may be provided with regulating-screws. The raising of the truncated cone e is effected by means of the lever it, which has its fulcrum on the arched stand, the point of resistance under the middle of the arch, and the operating means at the other end. The lever to is operated by means of a vertical rod 1;, which is provided at its upper end with screw-thread and bearing by which it can be raised or lowered by turning its screw-threaded wheel or handle cc, supported by the socket y, in one direction or the other, raising or lowering with it the lever to and by it the step-bearing, the vertical shaft 12, and the truncated cone e.

As the shaft 1) might in its upward or downward movement carry with it its driving bevelpinion 2', which is splined thereon, a collar m in two parts is fixed onto the stand t by means of two lugs and engages a groove which encircles the hub of the pinion, thus preventing it from longitudinal movement whatever 2' I csonss be the movement of the Shea. t should be understood that the pinion is not keyed on the shaft, but only carries a set-screw.

In Fig. 2 the direction of flow of the pulp 5 during the process of beating and refining is indicated by an arrow. After entering the apparatus at the bottom by the inlet-throat 5 '7 it rises while it is being acted upon by the blades or conical surfaces between the-two 1o conical surfaces and passes onward through the outlet 3, to return by way of the outer channel 6 of the vat to the inlet-throat5.

' Instead of one inlet and one outlet it is to be understood that the apparatus may be pro-- vided with two outlets and two inlets. It should, also be understood that the apparatus maybe arranged horizontally instead of vertically without affecting the principlc'of the invention.

,Having thus described my invention, what Iclaim as new, and desireto secure by Letters Patent, is I 1. In a pulp beating and refining apparatus, 7

the combination of a conical shell havingan I z 5 inlet and outlet at opposite ends, respectively,

a series of blades arranged on the innersur face of the shell, an interior rotary grinding cone. coaxial therewith and provided with a series of exterior blades, the blades on the let, and the blades on the cone tapering in op= posite direction and the smaller ends of the cone and shell being adjacent to the inlet and the larger ends adjacent the outlet, means for rotating the cone, and means for conducting the pulp in a continuous stream to and from said shell and back through the same, substantially as set'forth. Y

2; In a pulp beating and refining apparatus, the combination of a vertical conical shell 0 having an inlet and outlet at opposite ends, I respectively, a series of blades arranged on the inner surface'of the shell, an interior rotary'g'rinding-cone coaxial with the shell and of difierent conicity, said interior cone being o shell tapering from near the inlet to the out- FERDINAND REGIS., 

